Flash-light switch.



M. B. LANGDON.

FLASH LIGHT SWITCH.

APPLICATION FILED MAR. I4. 1916.

m J 5 ,v w M 2, M m r M 0 m 7 a P ATE MARTIN B. LANGDON, OF PARDEEVILLE,WISCONSIN.

FLASH-LIGHT SWITCH.

Specification of Letters Patent.

Patented Jan. 2, 1917.

Application filed March 14, 1916. Serial No. 84,138.

purpose to provide an ordinary flashlight with a lever or cam member ofnon-electric conducting material which is disposed between the springcontacts and so arranged as to positively prevent the contacts engagingwith each other except when actuated and whereby the short circuiting ofthe battery will be effectively prevented.

With the above and other objects in view the improvement resides intheconstruction, combination and arrangement of parts set forth in thefollowing specification and falling within the scope of the appendedclaims.

In the drawing: Figure 1 is a vertical longitudinal sectional viewthrough a flashlight constructed in accordance with the presentinvention, Fig. 2 is a horizontal sectional view approximately on theline 2-2 of Fig. 1, and Fig. 3 is a perspective view of a cap for theflashlight. Fig. 4 is a detail vertical longitudinal sectional viewthrough a portion of the device showing the switch member arrangedbetween the contact members.

In the drawings, A designates the flashlight in its entirety.

The flashlight is of the ordinary construction including a metal casing1 having one of its ends open to receive the battery B, and the saidbattery has a covering of insulating material. The numeral 4 designatesthe lamp bulb which is suitably connected with the casing 1 and whichcontacts with one of the poles of the battery. The bulb is furtherprovided with a metallic or electric conducting member connecting thesame with the metal casing.

The other pole of the battery at the outer end thereof has arrangedthereon a spring contact member 5, and the numeral 6 designates athreaded cap which is constructed of metal and which is screwed upon theouter and open end of the casing. Arranged within this cap is a springcontact member 7 which is normally arranged to engage with the contactmember 5, and the numeral 8 designates a switch lever which iseccentrlcally pivoted to the casing 6, as at 7 and which is disposed tooverlie the spring con tact member 7 and to engage with the springcontact member 5. This switch lever is, of course, constructed of somesuitable nonelectric conducting material and may, if desired and asshown in the drawings, be in the nature of a cam. The operating fingerextends through a suitable slot in the cap, and.

the said finger, indicated for distinction by the numeral 9, may haveimprinted adjacent its opposite edges suitable instructions to designatewhen the cam is moved to permit of the engagement of the contact membersand the lighting of the lamp bulb or when the switch is moved to awiping position or between the contact members 5 and 7.

From the above description, taken in connection with the accompanyingdrawings, the simplicity of the device as well as the advantages thereofwill, it is thought, be perfectly apparent to those skilled in the artto which such invention appertains without further detailed description.

Having thus described the invention, what I claim is: a

An electric flashlight including a casing having a battery therein and alamp between one of the poles of the battery and the casing, a springcontact upon the opposite end of the battery, a cap engaging the casingand surrounding the said contact, a spring contact member in the capnormally engaging with the said contact member on the end of thebattery, a pivoted lever of insulating material for the cap having oneof its ends projecting through an opening in the cap, the portion of thelever in the cap and beyond the pivotal connection between the saidlever and cap being offset, and said ofl"- set portion adapted to ridebetween and separate the contact member of the battery from the contactmember of the cap, when the lever is swung to one position.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN B. LANGDON.

Witnesses:

R. E. GARNER, S. H. DOOLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington,ID G."

